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<ul>
<li> Change the road geometry by dragging</li>
<li> Click onto the road to disturb traffic flow</li>
<li> Drag obstacles or construction vehicles to create new bottlenecks </li>
<li> Drag traffic lights to the road and click on them to toggle
  between red and light</li>
<li> Use the info button repeatedly for more info</li>
</ul>

